Ai Nikkor 28mm F3.5 + 80B ( Blue filter) WB=Daylight
F3.5, 4sec, ISO-400
Little experiment to see how it may looks like if I use this filter on daylight film.
I bring the black point to (+15) and apply some luminance noise reduction on PP.
I like the enhanced cobalt blue in the sky while this industrial area lights in closer one get white colour.